numpy.core.defchararray.join

xiaoxiao2021-02-27  265

In [1]: import numpy as np ...: a=np.array([1,2,3,4,5,6]).reshape(2,3).astype("str") ...: a Out[1]: array([['1', '2', '3'], ['4', '5', '6']], dtype='<U11') # 使用"."连接a[0]行 In [2]: ".".join(a[0]) Out[2]: '1.2.3' # 使用"."连接a,纵向循环 In [3]: np.apply_along_axis("-".join, 1, a) Out[3]: array(['1-2-3', '4-5-6'], dtype='<U5')
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